Another interesting thing is that according to the tale of the tape Floyd Mayweather had a longer arm length even though Oscar De Loya has a longer wingspan.

So maybe three stats height, wingspan, and arm length(mesaured from the arm pit to end of the clenched fist). Everybody before the fight thought Oscar had the reach advantage, so maybe the wingspan can slightly mask a fighters true arm length.

And there might possibly be a new area to attack besides head and body, the arms and shoulder. Attacking the arms and shoulders would decrease the opponents defense and decrease their handspeed.

Because shots to the arms and shoulders are considered blocked shots they would all read as white blows.

I believe that wingspan is fingertip to fingertip with arms straight out at your sides... whereas arm length is from the armpit to fingertips. So someone with a broad back would have a larger wingspan, twisting their torso would add to their length a little bit as they punch.